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Back key
• Tap to go back to the previous screen, or to close a dialog box,
options menu, the Notifications panel, etc.
Power key
• Press: Lock the screen/Light up the screen.
• Press and hold: Show the popup menu to select from Power off/
Restart/Screenshot.
• Press and hold the Power key and Volume down key to capture a
screenshot.
• Press and hold the Power key for at least 10 seconds to force restart.
Volume Keys
• Adjust the earpiece or headset volume during a phone call
• Adjusts the media volume while listening to music or a video, or
streaming content
• Adjust the ringtone volume.
• Mute the ringtone of an incoming call.
• While using the Camera app, press Volume up or down key to take
a photo or press and hold to take several photos.
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